Improvement in petroleum cooking-stoves



F. HILDEBRAND'T.

PETRQLEUM COOKING-STOVE.

No.185,533. Patented Dec. 19, .1876.

TH E GRAPHIC C II.N.

UNITED STATES PATENT OFFICE.

FREDRICK HILDEBRANDT, OF NEW YORK, N. Y.

IMPROVEMENT IN PETROLEUM COOKlNG-STOVES.

Specification forming part of Letters Patent No. 185,533, dated December 19, 1876; application filed November 25, 1876.

To all whom it may concern:

Be it known that I, FREDRIGK HILDE- BRANDT, of the city, county, and State of New York, have invented anew and useful Improvement in Petroleum Cooking-Stoves, which improvement is fully set forth in the following .specification, reference being had to the accompanying drawing, which represents a vertical central section.

Thisinvention relates to a petroleum cooking-stove in which a foraminous shell for supporting a vessel is combined with a petroleum- ,lamp. The lamp is provided with a centerdraft wick-tube, with which is combined a double or annular chimney, secured in the foraminous shell, so that by the contracted space of y the chimney sufficient draft is produced to concylinder, at, and a jacket, 12, between which is placed the wick. The cylinder at rises from the bottom of the cistern, and it is open above and below, so that the atmospheric air can freely pass up through its interior to the flame. The jacket I) is secured in' the top of theoil-cistern, as shown in the drawing, and said top is convex, for the purpose hereafter described. In

the cylinder at is situated an inner cylinder, at,

which serves to contract the space 6, through which the air passes to the interior of the flame, so as to cause such air to rush up with increased velocity. On the cistern A is placed a foraminous shell, G, which is made of sheet metal, and provided below with feet f, which bear upon the top of the cistern A. In the top of the foraminousshell is secured a circular frame, D, which is by preference made of cast-iron, and provided with a bottom flange, g, and with a seriesof ogee-shaped ribs, h z. The. ribs h terminate on the flange g, but the ribst' extend beyond said flange, and are firmly connected to'a flanged plate, 3', to which is fitted a cylindrical tube, E, the diameter of which is equal, or nearly so, to that of the inner cylinder at of the lamp. To the bottom end of the tube E is fastened a deflector, F, which fits into the mouth of the cylinder d,

- its flaring rim being made to project beyond the top edge of said cylinder, so that the air which passes up through the annular space 6 in the wick-tube is deflected outward. 0n the flange g of the top frame D of the foraminous shell is fitted a cylinder, G, which is by preference made of mica or other transparent material capable of sustaining the heat to whichit may beexposed, but which may be made of any suitable opaque and incandescent material. This cylinder extends down close to a convex conductor, H, which is situated in the bottom part of the foraminous shell, above a flange, I, which lies near to and above the convex top of the oil-cistern when the f0- raminous shell is in position. This flange hugs the wick-tube closely, so that when the foraminous shell is placed on the lamp it will be securely retained in position. The conductor H is open at the bottom, and it does not fit closely around the wick-tube, so that the air which enters through the holes in the foraminous shell can pass on.the inside and outside of said conductor to the flame.

By means of the ogee-shaped ribs h z of the top frame 1) vessels of various sizes can be conveniently and firmly adjusted on said frame for the purpose of exposing them to the heat of the flame which issues from the wick c of the lamp. The vessels placed on said top frame are entirely supported by the shell (J, which is perforated with a large number of openings, so as to give free access of the airto the flame, and to allow the gases of combustion to escape without obstruction.

By using a lamp with a center'draft wicktube, in combination with the foraminous shell, the contents of the vessel placed on said shell can be heated with great rapidity, the heat produced by the flame of this lamp being very intense.

By combining with the cylinder G an inner cylinder, E, I have produced an annular lampchimney, which, when combined with the circular wick-tube B, produces a flame without smoke. If the inner cylinder E is removed andcircular wick-tube, of the foraminous shell she the theqflame smokes very badly, and in order to produce a.flame without smoke the height of the cylinder G would have to be increased to such an extent that it would be impracticable for the purpose for which my apparatus is designed.

When the foraminous shellC is lifted off from the lamp free access can be had to all parts of the latter, and the cylinders G and E, and also the conductor H, can easily be taken off for the purpose of cleaning the samewhenev'erif may be desirable.

What I claim as new, and desire to secure by Letters Patent, ism 1. The combination, with the reservoir A (Land the flange I, bearing against the wickt-ube, and provided with the feet f, substantially as and for the purpose described.

2. The combination, with the foraminous ll G, the lamp-A,- it=s 'rcular wick-tube B, enLlgr 0hiIl1 HBLG E and the inner cylinder d, o a'de'flector, F, fitting said inner cylinder, substantially as and for the purpose deribs h i, for facilitating fthe adjustment of vesas shown and described. K 3

5. In agpetroleum cook'ng-stovathe.combination, with the top'framefD,ofogee-shaped 1 sels of various sizes," substantiallyas set forth. In testimony that lilclaiin the foregoingl I havehereunto set my hand this-Y24thday of November, 1876. i g it i i Emmet: H bEtRmm;

Witnesses; V r

W; HAUFF, q

scribed.

E. F. KAsTE HnB n. 

